Fix displayed existing keys

cmd/render/render.go

@@ -148,6 +148,9 @@ func collectDataFromMatchingFiles(baseDir, glob string, data map[string]interfac
 type visitFunc func(path []string, key any, value any) string
 
 func assembleRef(path []string, key, value any) string {
+	if len(path) == 0 {
+		return fmt.Sprintf(".%s", key)
+	}
 	return fmt.Sprintf(".%s.%s", strings.Join(path, "."), key)
 }
 

cmd/render/render_test.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/opendevstack/ods-pipeline-adoc/internal/testhelper"
 )
 
@@ -101,3 +102,25 @@ func TestRenderFailsOnMissingKeys(t *testing.T) {
 		t.Errorf("Error must list valid references, got:\n%s", err)
 	}
 }
+
+func TestWalkMap(t *testing.T) {
+	got := []string{}
+	data := map[string]any{
+		"foo": "bar",
+		"baz": map[string]any{
+			"one": 1,
+			"two": map[string]any{
+				"x": "y",
+			},
+		},
+	}
+	walkMap(data, &got, []string{}, assembleRef)
+	want := []string{
+		".foo",
+		".baz.one",
+		".baz.two.x",
+	}
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("walkMap() mismatch (-want +got):\n%s", diff)
+	}
+}